Subband switching method, device, and system

A subband switching method comprising:

• receiving, by user equipment, identification information of a target subband of a target cell from a network device, wherein the target cell comprises one or more subbands;
• determining, by the user equipment, a configuration parameter of the target subband according to the identification information of the target subband,
• wherein the identification information is associated with the configuration parameter, such that the configuration parameter of the target subband is known based on the identification information;
• and
• switching, by the user equipment, to the target subband from a source subband of a source cell according to the configuration parameter of the target subband,
• wherein the configuration parameter comprises a random access parameter and at least one of:
• a subcarrier space and a cyclic prefix (CP) length.

A subband switching apparatus applied on a network side, the apparatus comprising at least one processor, wherein the at least one processor is configured to read an instruction in a memory and implement:

• determining a target subband of a target cell to which user equipment is to switch from a source subband of a source cell, wherein the target cell comprises one or more subbands;
• and
• causing a transmitter to send identification information of the target subband to the user equipment,
• wherein the identification information of the target subband is associated with a configuration parameter that is of the target subband and that is usable for the user equipment to switch to the target subband, such that the configuration parameter of the target subband is known based on the identification information, and
• wherein the configuration parameter comprises a random access parameter and at least one of:
• a subcarrier space and a cyclic prefix (CP) length.

A subband switching apparatus applied on a terminal side, the apparatus comprising at least one processor, wherein the at least one processor is configured to read an instruction in a memory and implement:

• causing a receiver to receive identification information of a target subband of a target cell from a network device, wherein the target cell comprises one or more subbands;
• determining a configuration parameter of the target subband according to the identification information of the target subband received by the receiver,
• wherein the identification information is associated with the configuration parameter, such that the configuration parameter of the target subband is known based on the identification information;
• and
• switching to the target subband from a source subband of a source cell, according to the configuration parameter of the target subband,
• wherein the configuration parameter comprises a random access parameter and at least one of:
• a subcarrier space and a cyclic prefix (CP) length.

A non-transitory computer-readable storage medium, storing a computer program, wherein when executing the program, a computer implements:

• receiving identification information of a target subband of a target cell from a network device, wherein the target cell comprises one or more subbands;
• determining a configuration parameter of the target subband according to the identification information of the target subband,
• wherein the identification information is associated with the configuration parameter, such that the configuration parameter of the target subband is known based on the identification information;
• and
• switching to the target subband from a source subband of a source cell, according to the configuration parameter of the target subband,
• wherein the configuration parameter comprises a random access parameter and at least one of:
• a subcarrier space and a cyclic prefix (CP) length.

A non-transitory computer-readable storage medium, storing a computer program, wherein when executing the program, a computer implements:

• determining a target subband of a target cell to which user equipment is to switch from a source subband of a source cell, wherein the target cell comprises one or more subbands;
• and
• sending identification information of the target subband to the user equipment,
• wherein the identification information of the target subband is associated with a configuration parameter that is of the target subband and that is usable for the user equipment to switch to the target subband, such that the configuration parameter of the target subband is known based on the identification information, and
• wherein the configuration parameter comprises a random access parameter and at least one of:
• a subcarrier space or a cyclic prefix (CP) length.